四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 99 × 4 = 100 × 4 - __ × 4 | 33 + 15 + 29 = (33 + __) + 29 |
| (5 + 14) × 9 = 45 + __ | 40 + 31 + 18 = (40 + __) + 18 |
| 98 × 8 = 100 × 8 - __ × 8 | 6 + 32 + 42 = (6 + __) + 42 |
| 22 × 5 = 5 × __ | (9 + 4) × 2 = 18 + __ |
| 98 + 60 = 60 + __ | 31 + 60 = 60 + __ |
| (20 + 10) × 6 = 120 + __ | 37 + 91 = 91 + __ |
| 70 + 92 = 92 + __ | 65 + 35 = 35 + __ |
| 52 × 7 = 7 × __ | (7 + 17) × 6 = 42 + __ |
| 97 × 6 = 100 × 6 - __ × 6 | 80 + 22 = 22 + __ |
| 64 × 5 = 5 × __ | 49 + 66 = 66 + __ |
| 99 × 8 = (100 - __) × 8 | 27 + 32 + 37 = (27 + __) + 37 |
| 3 × 2 = 2 × __ | 96 × 6 = 100 × 6 - __ × 6 |
| 24 + 37 + 16 = (24 + __) + 16 | 22 + 35 + 24 = (22 + __) + 24 |
| (6 + 3) × 9 = 54 + __ | (12 + 3) × 9 = 108 + __ |
| (1 + 2) × 8 = 8 + __ | 71 × 7 = 7 × __ |
| 97 × 4 = (100 - __) × 4 | 41 + 27 + 5 = (41 + __) + 5 |
| 99 × 8 = 100 × 8 - __ × 8 | (20 + 11) × 6 = 120 + __ |
| 22 × 3 = 3 × __ | 18 + 19 + 46 = (18 + __) + 46 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 99 × 4 = 100 × 4 - __ × 4 1 | 33 + 15 + 29 = (33 + __) + 29 15 |
| (5 + 14) × 9 = 45 + __ 126 | 40 + 31 + 18 = (40 + __) + 18 31 |
| 98 × 8 = 100 × 8 - __ × 8 2 | 6 + 32 + 42 = (6 + __) + 42 32 |
| 22 × 5 = 5 × __ 22 | (9 + 4) × 2 = 18 + __ 8 |
| 98 + 60 = 60 + __ 98 | 31 + 60 = 60 + __ 31 |
| (20 + 10) × 6 = 120 + __ 60 | 37 + 91 = 91 + __ 37 |
| 70 + 92 = 92 + __ 70 | 65 + 35 = 35 + __ 65 |
| 52 × 7 = 7 × __ 52 | (7 + 17) × 6 = 42 + __ 102 |
| 97 × 6 = 100 × 6 - __ × 6 3 | 80 + 22 = 22 + __ 80 |
| 64 × 5 = 5 × __ 64 | 49 + 66 = 66 + __ 49 |
| 99 × 8 = (100 - __) × 8 1 | 27 + 32 + 37 = (27 + __) + 37 32 |
| 3 × 2 = 2 × __ 3 | 96 × 6 = 100 × 6 - __ × 6 4 |
| 24 + 37 + 16 = (24 + __) + 16 37 | 22 + 35 + 24 = (22 + __) + 24 35 |
| (6 + 3) × 9 = 54 + __ 27 | (12 + 3) × 9 = 108 + __ 27 |
| (1 + 2) × 8 = 8 + __ 16 | 71 × 7 = 7 × __ 71 |
| 97 × 4 = (100 - __) × 4 3 | 41 + 27 + 5 = (41 + __) + 5 27 |
| 99 × 8 = 100 × 8 - __ × 8 1 | (20 + 11) × 6 = 120 + __ 66 |
| 22 × 3 = 3 × __ 22 | 18 + 19 + 46 = (18 + __) + 46 19 |